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An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion

Title
An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion
Author
Megumi Kawasaki
Keywords
Aluminum alloy; Copper alloy; Hardness; High-pressure torsion; Ultrafine grains
Issue Date
2014-12
Publisher
Elsevier Science B.V
Citation
Journal of Materials Research and Technology , 2014, 3(4), P.319-326
Abstract
Experiments were conducted on two commercial alloys, a Cu-0.1% Zr alloy and an Al-7075 aluminum alloy, to investigate the significance of the saturation microstructure which is achieved after processing by high-pressure torsion (HPT). Samples were processed by HPT and also by a combination of equal-channel angular pressing (ECAP) followed by HPT. The results show that the saturation conditions are dependent upon the grain size in the material immediately prior to the HPT processing. Additional grain refinement may be achieved in HPT by initially processing the material to produce an ultrafine-grain size before conducting the processing by HPT. (C) 2014 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda.
URI
https://www.sciencedirect.com/science/article/pii/S2238785414000763?via%3Dihubhttp://hdl.handle.net/20.500.11754/49597
ISSN
2238-7854; 2214-0697
DOI
10.1016/j.jmrt.2014.10.002
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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